Magnesium chloride এর কাজ, ব্যবহারের নিয়ম

Calcium (Ca) and strontium (Sr) are expected to show chemical reactions similar to magnesium (Mg). This is because the number of valence electrons (2) is same in all these three...

The ions having same number of electrons are called isoelectronic ions. The above order is due to increasing order of effective nuclear charge.

The first ionization enthalpy of sodium is more than that of magnesium. This is primarily because of two reasons: a. The atomic size of sodium is greater than that of magnesium b....

Na atom get oxidize and Cl is reduced

(i) Sodium oxide                 → Na2O  (ii) Aluminium chloride       → AlCl3  (iii) Sodium suphide           → Na2S  (iv) Magnesium hydroxide → Mg(OH)2

(a) Magnesium chloride →MgCl2  (b) Calcium oxide →CaO  (c) Copper nitrate →Cu(NO3)2  (d) Aluminium chloride →AlCl3  (e) Calcium carbonate →CaCO3

Number of moles 12 / 24 = 0.5 mol 

A Mg2+ ion and Mg atom differ by two electrons.  103 moles of Mg2+ and Mg atoms would differ by  103 × 2 moles of electrons  Mass of 2 ×103 moles of electrons...

Hint–  Step-1 Separate iron filings with the help of a magnet  Step-2 Sublimation of the remaining mixture separates ammonium chloride  Step-3 Add water to the remaining mixture, stir and filter  Step-4 The filtrate can...

The correct answer is  (b)